Spatial distribution and contamination assessment of heavy metal pollution of sediments in coastal reclamation areas: a case study in Shenzhen Bay, China

Abstract Background With the continuous advancement of global urbanisation, humans have begun to overutilise or improperly utilise the natural resources of bay areas, which has led to a series of ecological and environmental problems. To evaluate the spatial distributions and potential ecological risks of heavy metals in sediments of Shenzhen Bay, China, an analysis of As, Cd, Cr, Cu, Pb, and Zn regarding their content, correlation (Pearson coefficient), pollution degree, and potential ecological risks was conducted. Results The heavy metal contents in the sediments decreased in the order of Zn > Cu > Cr > Pb > As > Cd, with contents of 175.79 mg kg−1, 50.75 mg kg−1, 40.62 mg kg−1, 37.10 mg kg−1, 18.27 mg kg−1, and 0.20 mg kg−1, respectively. The results showed that the overall sediment quality in Shenzhen Bay generally met the China Marine Sediment Quality criteria, and the heavy metal contents were significantly lower than those reported in the same type of bay area worldwide. Furthermore, the order of grade of potential ecological risk of the heavy metals was as follows: As and Cd were found to pose moderate ecological risks, with their potential hazard indices reaching a high level, whereas the potential ecological hazard indices of Cu, Pb, Zn, and Cr were all at relatively low levels. Conclusions The potential hazard indices of the heavy metals decreased from the inner bay toward the outside. The accumulation and content of the analysed heavy metals in the Shenzhen Bay sediments are mainly controlled by historical land-source pollution and land reclamation projects. This study presents the current state of sediment quality in Shenzhen Bay. The results may assist in the definition of future bay area management measures specifically targeted at monitoring heavy metal contamination.

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Heavy metals in Venezuelan marine sediments: concentrations, degree of contamination, and distribution

Ciencias Marinas ◽

10.7773/cm.v47i3.3124 ◽

2021 ◽

Vol 47 (3) ◽

Author(s):

Ruth Ramos ◽

Alejandra Verde ◽

Elia M García

Keyword(s):

Heavy Metals ◽

Heavy Metal ◽

Marine Sediments ◽

Heavy Metal Contamination ◽

18Th Century ◽

Distribution Patterns ◽

Potential Hazard ◽

Degree Of Contamination ◽

Metal Concentrations ◽

Heavy Metal Concentrations

Venezuelan oil exploration and exploitation activities have been taking place since the 18th century. These long-term activities are closely related to heavy metal contamination because of the increasing input of toxic pollutants. Variations in heavy metal concentrations can cause, among other things, changes in metal distribution patterns, alterations in biogeochemical cycles, and increments in environmental and biological risks. The need for a complete baseline on heavy metal concentrations along the Venezuelan coast is critical. For this reason, we present the concentrations, distribution, and degree of contamination of 9 heavy metals (barium, mercury, copper, nickel, chromium, cadmium, zinc, lead, and vanadium) in marine sediments along the Venezuelan coast. We used the enrichment factor, the geoaccumulation index, and the mean effects range median quotients to evaluate the degree of contamination, comparing areas with and without intervention. Our results indicate that higher concentrations of these heavy metals are associated with places with greater anthropic activity, especially on the central and eastern coasts of Venezuela. Only cadmium showed extremely severe enrichment and a high degree of contamination. The biohazard potential was between 12% and 30% and was primarily associated with locations having high oil activity, which suggests that these places must be monitored, given the potential hazard they represent. This work encompasses the distribution and concentration of 9 heavy metals along the Venezuelan coast and takes relevance as a baseline for heavy metal concentrations and pollution indicators in marine sediments for Venezuela and the Caribbean.

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Heavy Metal Pollution and Mobility in Soils within a Landfill Vicinity: A South African Case study

Oriental Journal Of Chemistry ◽

10.13005/ojc/350406 ◽

2019 ◽

Vol 35 (4) ◽

pp. 1286-1296 ◽

Cited By ~ 2

Author(s):

Joan Mwihaki Nyika ◽

Ednah Kwamboka Onyari ◽

Megersa Olumana Dinka ◽

Shivani Bhardwaj Mishra

Keyword(s):

Heavy Metals ◽

Heavy Metal ◽

Metal Pollution ◽

Heavy Metal Pollution ◽

Heavy Metal Contamination ◽

Natural Occurrence ◽

Potential Hazard ◽

Icp Ms ◽

Parent Rocks ◽

High Concentrations

Heavy metal contamination in soils results from anthropogenic and lithologic factors and is a potential hazard to land and water resources. Sources of such pollution include landfills, domestic sewage, agricultural fertilisers and industries. In this work, soils from Roundhill landfill vicinity in South Africa were sampled and analyzed to determine the concentrations of particular heavy metals, namely As, Co, Cr, Cu, Fe, Mn, Ni, Pb, V and Zn. The main objectives of this work were to: quantify the concentration levels of heavy metals in the soil; determine the mobility of the heavy metals in the soil; and establish their origins and interrelationships. The soils were collected at various distances and depths from the landfill facility. The concentrations of heavy metals in the soil samples were analysed by ICP-MS and statistical analysis was carried out to establish their relationships and sources. From the analysis, some elements including Cr, Mn, Cu and Ni had measured concentrations beyond the threshold limits in most sampling sites irrespective of their distance and depth from the landfill vicinity. Conversely, some elements were observed to be immobile and had higher concentrations on the top soils closer to the landfill, such as As, Pb, Zn, Co and V. Iron (Fe) had high concentrations in all the sampling sites due to its natural occurrence in the parent rocks. In conclusion, the potential of soil quality deterioration due to heavy metal pollution in a landfill vicinity was observed. Furthermore, all heavy metals observed showed positive correlation to each other except for As and Co, indicating same origin.

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The Amount of Selected Heavy Metals in Water, Sediments and Fish Species from the Rupsha River, Khulna, Bangladesh

Asian Journal of Fisheries and Aquatic Research ◽

10.9734/ajfar/2020/v6i230091 ◽

2020 ◽

pp. 1-9

Author(s):

Md. Matiar Rahman ◽

Md. Mahedi Hassan

Keyword(s):

Heavy Metals ◽

Heavy Metal ◽

Fish Species ◽

Metal Contamination ◽

Heavy Metal Contamination ◽

Sediment Quality ◽

Aquatic Organisms ◽

Maximum Level ◽

Contamination Level ◽

Aquatic Life

The present study was conducted to figure out the heavy metals (Cd, Co, Cu, Fe, Hg, Mn, Mo, Ni, Pb and Zn) concentrations in water, sediments and fish species from the Rupsha River, Khulna, Bangladesh to spot the heavy metal contamination level. Heavy metals are dangerous because they're non-biodegradable and having an extended half-life period. The heavy metal contamination could also be an excellent concern, especially for aquatic life. The metal concentration within the water sample from the Rupsha River was significantly above the rule values of WHO and USEPA respectively. Moreover, the concentration of metal within the sediments was also greater than the respective probable effect concentrations of the sediment quality guidelines. Furthermore, consistent with the fish standards, these studied fish species weren't found to be contaminated by heavy metals. It’s concluded that each of the heavy metals from the whole sample didn't exceed the standard maximum level. This study demonstrated that water of Rupsha River isn't safe for aquatic organisms also like humans in terms of Pb, Cd and Cr contents as accumulated through consumption.

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Sources of heavy metal contamination in landfill soil covers of Ulaanbaatar

Mongolian Journal of Agricultural Sciences ◽

10.5564/mjas.v22i03.966 ◽

2018 ◽

Vol 22 (03) ◽

pp. 140-144

Author(s):

Minjmaa B ◽

Oyunchimeg T

Keyword(s):

Heavy Metals ◽

Heavy Metal ◽

Metal Contamination ◽

Industrial Waste ◽

Heavy Metal Contamination ◽

Electrical Wire ◽

Soil Covers ◽

Metal Contents ◽

Landfill Sites ◽

Heavy Metals In Soils

The aim of the study was to determine the source for contents of heavy metals in soils of landfill sites in Ulaanbaatar. Samples were collected from ash of the burned waste near the landfill sites to identify content of heavy metals such as plumbum, chromium, cadmium, nickel and zinc. There are total of 300 mg/kg chromium and 700 mg/kg zinc identified from ash of burned electrical wire, 1000 mg/kg plumbum is identified from the ash of burned tires. According to the comparison of heavy metal contents in landfill sites, landfill of industrial waste has higher content rate of chromium and cadmium than other landfill sites. These open burnings and industrial waste have considerable influences on contaminated soil with heavy metals. This is not only a source for soil contamination but also a risk to air and water pollution or resident health. Therefore, it is indispensable to develop waste management for human health and environmental protection.

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Assessment of Heavy Metal Contamination in Saguling Reservoir Water West Java Province Indonesia

E3S Web of Conferences ◽

10.1051/e3sconf/20187306009 ◽

2018 ◽

Vol 73 ◽

pp. 06009

Author(s):

Wardhani Eka ◽

Notodarmojo Suprihanto ◽

Roosmini Dwina

Keyword(s):

Heavy Metals ◽

Heavy Metal ◽

Water Samples ◽

Heavy Metal Contamination ◽

Quality Standard ◽

Sampling Location ◽

West Java ◽

Reservoir Water ◽

Metal Contents ◽

Mean Concentration

Saguling reservoir in West Java Province is becoming increasingly polluted by heavy metals. The purpose of this study was to determine the level of four heavy metals such as Cd, Cr, Cu, and Pb concentration at Saguling Reservoir at ’2 sampling location. Water samples were collected during rainy and summer 2008-2017 to determine the spatial distribution seasonal and temporal variation of different heavy metal contents. Mean metals concentrations in summer seasons were Cd, Cr, Cu, and Pb higher than rainy season. Mean concentration of Cd, Cu, Cr, and Pb in water samples were accordance water quality standard in both season. Heavy metal pollution that occurs in the Saguling reservoir must be monitored because this reservoir is planned to be a source of raw water for Bandung City.

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ANALISIS KANDUNGAN MERKURI (Hg) PADA PADA EKOSISTEM SUNGAI WAELATA DAN SUNGAI ANAHONI YANG TERDAMPAK AKTIFITAS PERTAMBANGAN EMAS DI PULAU BURU, MALUKU

CHEMISTRY PROGRESS ◽

10.35799/cp.13.1.2020.29062 ◽

2020 ◽

Vol 13 (1) ◽

Author(s):

Irsan . ◽

Yusthinus T. Male ◽

Debby A. J. Selanno

Keyword(s):

Heavy Metals ◽

Heavy Metal ◽

Metal Contamination ◽

Heavy Metal Contamination ◽

Sea Water ◽

Sediment Quality ◽

Quality Standard ◽

National Standard ◽

Marine Biota ◽

Maximum Limit

Sungai Waelata dan Sungai Anahoni merupakan dua sungai tempat beroperasinya trommel untuk pengolahan material emas Gunung Botak dan Gogrea. Melalui aliran sungai, limbah merkuri hasil pengolahan trommel terangkut dan terbawa ke muara yang pada akhirnya akan mencemari perairan laut Teluk Kayeli. Kerang Polymesoda erosa merupakan salah satu jenis kerang yang sering digunakan dalam pemantauan logam berat merkuri, terutama pada wilayah muara sungai. Penelitian ini bertujuan untuk menganalisis kadar logam berat merkuri(Hg) pada air, sedimen dan kerang Polymesoda erosadi Muara Sungai Waelata dan Sungai Anahoni Kabupaten Buru. Hasil penelitian menunjukan konsentrasilogamberat merkuripada air di Muara Sungai Waelata dan Sungai Anahoni tidak terdeteksi di semua stasiun penelitian dan dibawah baku mutu air laut untuk biota laut berdasarkan Kepmen LH No. 51 Tahun 2004 sebesar 0,001 ppm. Konsentrasilogamberat merkuripada sedimenmemilikikisaranrataratasebesar0,1340,874ppm dan dibawah baku mutu sedimen berdasarkan ANZECC/AMRCANZ (2000) sebesar 1,0 ppm. Konsentrasilogamberat merkuripada kerang Polymesoda erosamemilikikisaranrataratasebesar0,1230,206 ppm dan dibawah Batasan Maksimum Cemaran Logam Berat Dalam Pangan merujuk pada Standar Nasional Indonesia (SNI) No. 7387 Tahun 2009 sebesar 1,0 ppmABSTRACT The Waelata River and the Anahoni River are the two rivers where trommel operates for the processing of gold material from Gunung Botak and Gogrea. By the river, mercury waste from the processing of trommel is transported through estuary which will ultimately pollute the waters of the Kayeli Bay. Polymesoda erosa shells are one type of shellfish that is often used in monitoring heavy metals of mercury, especially in the estuary region. This study aims to analyze the concentration of heavy metal mercury (Hg) in water, sediments and Polymesoda erosa shells in the Waelata River and Anahoni River in Buru Regency. The results showed that the concentration of mercury heavy metals in water in the Waelata River and Anahoni River were not detected at all research stations and were below sea water quality standard for marine biota based on Minister of Environment Decree No. 51 of 2004 which is 0.001 ppm. The concentration of mercury heavy metals in sediments has an average range of 0.1340.887 ppm and is below the sediment quality standard based on ANZECC/AMRCANZ (2000) of 1.0 ppm. The concentration of mercury heavy metals in Polymesoda erosa shells has an average range of 0.1230.206 mg/kg and under the Maximum Limit of Heavy Metal Contamination in Food refers to the Indonesian National Standard (SNI) No. 7387 of 2009 which is 1.0 ppm.

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Assessment of Heavy Metal Concentration in Ujjani Reservoir Water and Sediment, Maharashtra, India

10.21203/rs.3.rs-38648/v1 ◽

2020 ◽

Author(s):

Dnyaneshwar Shinde ◽

Dnyanesh M. Mahajan ◽

Sanjay D. Chakane

Keyword(s):

Heavy Metals ◽

Heavy Metal ◽

Ecological Risk ◽

Risk Index ◽

Sediment Quality ◽

Heavy Metal Concentration ◽

Human Beings ◽

Reservoir Water ◽

Water And Sediment ◽

Metal Contents

Abstract The study was conducted to investigate heavy metal contents namely, Iron (Fe), Copper (Cu), Zinc (Zn), and Manganese (Mn) from surface sediment and water samples collected from the Ujjani Reservoir. The concentrations (mg kg− 1) of Fe, Cu, Zn and Mn in sediment detected were 4455.0, 184.05, 97.4, 1090.5 respectively, while in water metal contents (mg l− 1) Fe, Cu, Zn, and Mn were 3.05, 0.5, 0.82, and 2.56 correspondingly. The contents of metals in the studied samples showed a descending order such as Fe, Mn, Zn and Cu. It was observed that the mean concentrations of Fe, Cu, and Mn were more in sediment and water, whereas, Zn contents were detected lesser than the standard levels proposed by USEPA 2004. The sediment pollution analysis was achieved using a Pollution load index (PLI), Geoaccumulation index (Igeo) and Potential ecological risk index (RI). Similarly, risk of metals in water was evaluated using Average absorption dose (ADD), Hazardous quotient (HQ), and Hazardous index (HI). In our study, the ADD, HQ and HI values for metals were lower than 1, indicating that there is no health risk associated with studied heavy metals present in surface water. Also sediment quality assessment shows that there is minor ecological risk of studied heavy metals. Even though, the Ujjani Reservoir has a lower ecological risk, its water and sediment quality is declining day by day. Therefore, there is a need to make a policy for ecological restoration to avoid further damage to the ecosystem and human beings.

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The S. Domingos Mine: A study of heavy metal contamination in the water column and sediments of the Chanca River Basin by discharge from an ancient cupriferous pyrite mine (Portugal)

Marine and Freshwater Research ◽

10.1071/mf9950145 ◽

1995 ◽

Vol 46 (1) ◽

pp. 145 ◽

Cited By ~ 15

Author(s):

EG Pereira ◽

I Moura ◽

JR Costa ◽

JD Mahony ◽

RV Thomann

Keyword(s):

Heavy Metals ◽

Heavy Metal ◽

Water Column ◽

Heavy Metal Contamination ◽

Sediment Quality ◽

Heavy Metal Concentration ◽

Acid Volatile Sulfide ◽

Stream Flows ◽

Almost All

The water column and the sediment in the S. Domingos Mine area and the associated drainage stream are heavily contaminated by heavy metals. The Chanca Reservoir, into which this stream flows, shows a localized area where the sediment is contaminated by heavy metals, but in general the water column does not show any contamination. Both water column and sediment quality were analysed, including determination of total heavy metal concentration as well as acid volatile sulfide (AVS) and simultaneously extracted metal (SEM). The ratio between SEM and AVS is less then 1 for almost all sampling sites, showing that the Chanca Reservoir appears to be protected in most areas with respect to both sediment and water column toxity.

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Sediments Quality based on Geo-Accumulation Index in Heavy Metals (Pb, Cu, and Cd) of Cengkok Coastal Waters, Banten Bay

Jurnal Pendidikan IPA Indonesia ◽

10.15294/jpii.v9i4.24908 ◽

2020 ◽

Vol 9 (4) ◽

pp. 574-582

Author(s):

N. K. Wardani ◽

T. Prartono ◽

S. Sulistiono

Keyword(s):

Heavy Metals ◽

Heavy Metal ◽

Coastal Waters ◽

Heavy Metal Contamination ◽

Anthropogenic Activities ◽

Sediment Quality ◽

A Value ◽

Accumulation Index ◽

Geo Accumulation Index ◽

Geo Accumulation

This area, which is located near the Banten Bay, is quite active with anthropogenic activities such as industry, fisheries, settlements, and shipyards that have the potential to pollute the environment with heavy metals. This study aims to determine the chemical environmental conditions of the waters and the concentration of heavy metals in the sediments of Banten Bay. Sediment samples were taken at five stations consisting of river and bay sections in April, May, July, August, and September 2019. Heavy metal content in sediments was analyzed according to APHA 2012 using hydrochloric acid and nitric acid destruction methods. The results of heavy metal concentrations in sediments were compared with ANZECC 2000 regulations and sediment quality was determined using the Geo-accumulation Index. The sediment at the observation site is dominated by the silt fraction. The concentration of heavy metals in this study was obtained in the form of lead (Pb) ranging from <0.05 to 6.408 mg / Kg, copper (Cu) ranging from 0.059 to 8.791 mg / Kg, and cadmium (Cd) ranging from 0.042 to 0.605 mg / K. While based on The level of heavy metal contamination in sediments using the Geo-accumulation index (I Geo), the value of all metal types in each month has a value <0.000 at all observation stations. Thus it is concluded that the concentration of heavy metals in the sediment is lower than the threshold determined during the observation. So that the metal concentration weight in the sediment has no significant effect on the environment.

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Heavy metal contamination of vegetables from green markets in Novi Sad

Zbornik Matice srpske za prirodne nauke ◽

10.2298/zmspn1631099a ◽

2016 ◽

pp. 99-108 ◽

Cited By ~ 1

Author(s):

Danijela Arsenov ◽

Natasa Nikolic ◽

Milan Borisev ◽

Milan Zupunski ◽

Slobodanka Pajevic

Keyword(s):

Heavy Metals ◽

Heavy Metal ◽

Continuous Monitoring ◽

Heavy Metal Contamination ◽

Healthy Human ◽

Potential Health ◽

Atmospheric Depositions ◽

Metal Contents ◽

Novi Sad ◽

Edible Parts

are valuable source of vitamins, minerals and fibers important for healthy human nutrition. However, an increased level of heavy metals in vegetables has been noticed in recent years. This study was conducted with an aim to analyze content of heavy metals, cadmium (Cd), lead (Pb), and chromium (Cr) in 11 vegetable species which are the most common in human diet. Vegetables were collected from three green markets (Limanska, Futoska and Riblja pijaca) in Novi Sad, during September and October, from 2009 to 2011. Heavy metal contents were analyzed in edible parts of tomato, potato, spinach, onion, beetroot, parsley, parsnip, carrot, cauliflower, pepper and broccoli using atomic absorption spectrophotometer (Varian, AAS 240FS). The results showed statistically significant differences in element concentrations among analyzed vegetables. In general, the highest metal pollution was observed in the year of 2011. Spinach was found to contain the highest metals content - 0.89 ?g/g for Cd, 5.81 ?g/g for Pb, and 3.67 ?g/g for Cr. According to Serbian official regulations, 18.18% of all analyzed species exceeded maximum permissible level for Cd, 9.09% for Pb, while for Cr these limits are not defined. Elevated content of heavy metals in vegetables might be related to soil contamination, atmospheric depositions during transportation and marketing. Thus, a continuous monitoring of vegetables on markets should be performed in order to prevent potential health risks to consumers.

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